Results 91 to 100 of about 1,240 (223)

Constraints on the Origin of the Martian Dichotomy From Southern Highlands Marsquakes

open access: yesGeophysical Research Letters, Volume 52, Issue 1, 16 January 2025.
Abstract The Martian hemispheric dichotomy is delineated by significant differences in elevation and crustal thickness between the Northern Lowlands and Southern Highlands. Yet, its origin remains controversial. Here, we improve the signal‐to‐noise ratios and determine the locations of the low‐frequency marsquakes recorded during the InSight mission ...
Weijia Sun, Hrvoje Tkalčić
wiley   +1 more source

The mosaics of Mars: As seen by the Viking Lander cameras [PDF]

open access: yes
The mosaics and derivative products produced from many individual high resolution images acquired by the Viking Lander Camera Systems are described: A morning and afternoon mosaic for both cameras at the Lander 1 Chryse Planitia site, and a morning, noon,
Jones, K. L., Levinthal, E. C.
core   +1 more source

The Periglacial Landforms and Estimated Subsurface Ice Distribution in the Northern Mid‐Latitude of Mars

open access: yesJournal of Geophysical Research: Planets, Volume 130, Issue 1, January 2025.
Abstract Subsurface ice in the mid‐latitude regions is a significant water inventory on present‐day Mars, and their volume and distribution are thought to have varied due to the orbitally induced paleoclimatic changes. Using high‐resolution satellite images, the present study explores the distributions of three presumed periglacial landforms (thermal ...
Takaki Sako   +4 more
wiley   +1 more source

Evolution of Water Reservoirs on Mars: Constraints from Hydrogen Isotopes in Martian Meteorites

open access: yes, 2014
Martian surface morphology implies that Mars was once warm enough to maintain persistent liquid water on its surface. While the high D/H ratios (~6 times the Earth's ocean water) of the current martian atmosphere suggest that significant water has been ...
Dohm, James M.   +6 more
core   +1 more source

The First Global Catalog of Rockfall Locations on Mars

open access: yesGeophysical Research Letters, Volume 51, Issue 24, 28 December 2024.
Abstract Rockfalls are ubiquitous expressions of present‐day landscape evolution across the solar system. On Mars, their distribution has been proposed to indicate endo‐ and exogenic drivers, such as tectonic activity and solar‐driven thermal fatigue. Here, we present the first global catalog of 1,383 rockfall‐bearing locations on Mars, derived using ...
V. T. Bickel   +5 more
wiley   +1 more source

Revision of the Martian relative age chronology [PDF]

open access: yes
This study has provided a more detailed chronology than currently exists in the literature and has created some changes to the currently accepted geological evolutionary sequence of Mars.
Barlow, Nadine G.
core   +1 more source

Organic Carbon and Ca‐Rich Carbonate Detections in Soils of the Northern Plains, Mars: Evaluation of Unreported Data From the Mars Phoenix Scout's Thermal Evolved Gas Analyzer (TEGA)

open access: yesJournal of Geophysical Research: Planets, Volume 129, Issue 10, October 2024.
Abstract The Thermal Evolved Gas Analyzer (TEGA) analysis of surface and icy subsurface Phoenix landing site soils consisted of low (300–700°C) and high (>700°C) temperature CO2 evolutions that were attributed to organic carbon (83–1,484 μgC/g) and Ca‐rich carbonate (1.1–2.6 wt.%).
B. Sutter   +5 more
wiley   +1 more source

火星表面の永久凍土と周氷河作用 [PDF]

open access: yes, 2016
 Following the development of high-resolution imaging, digital elevation models, thermal and hydrological data, and onsite ground information during the early period of the 21st century, the periglacial geomorphology of the Martian surface advanced ...
MATSUOKA Norikazu, 松岡 憲知
core   +1 more source

Viking Lander 1 and 2 revisited: The characterisation and detection of Martian dust devils [PDF]

open access: yes, 2003
Dust devil data from Mars is limited by a lack of data relating to diurnal dust devil behaviour.
Ringrose, Tim   +2 more
core  

Seismology on Mars [PDF]

open access: yes, 1977
A three-axis short period seismometer has been operating on the surface of Mars in the Utopia Planitia region since September 4, 1976. During the first five months of operation approx.
Anderson, D. L.   +9 more
core   +4 more sources

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